Dual isolation mechanism of cementation port
US8727026B2 · kind B2 · utility
1Cited by
31References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2009 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Oct 9, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for providing fluid communication includes a housing having a port; an inner sleeve adapted to seal the port; and a seal sleeve adapted to seal the port, wherein the seal sleeve is disposed between the inner sleeve and the housing and is movable with the inner sleeve to seal the port. In another embodiment, the port is sealed using a metal to metal seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.